摘要
微生物电解池(MEC)能有效降解污泥有机质并获取清洁能源,其产氢效能受底物性质的影响显著。通过以葡萄糖与牛血清白蛋白(BSA)为碳水化合物与蛋白质的模拟底物开展MEC批式循环试验,探究不同比例(1∶0、5∶1、1∶1、1∶5、0∶1,以COD计)的葡萄糖和BSA基质在MEC中的产氢性能。结果表明:葡萄糖较BSA更易被产电菌利用,产氢性能更优,在葡萄糖和BSA比例为1∶0的试验组中产氢量最高可达(28.96±3.45)mL;随着BSA的增加,氢气产率明显降低,葡萄糖的去除率也有所降低,从(98.65±0.70)%下降至(92.24±1.84)%。在以BSA为主的试验组(葡萄糖和BSA比例为1∶5、0∶1)中发现所产氢气更快速地转化为CH4,同时葡萄糖影响了BSA的降解效率,其降解率为(38.49±4.31)%~(44.96±5.13)%;葡萄糖也影响了BSA的转化途径,具体表现为蛋白质降解副产物NH_(4)^(+)-N的产量降低。
Hydrogen production from microbial electrolysis cell(MEC)can effectively degrade sludge organic matters to obtain clean energy,and its hydrogen production efficiency is significantly affected by substrate properties.A batch cycle experiment was carried out to investigate the effect of mixing ratio(1∶0,5∶1,1∶1,1∶5 and 0∶1,calculated by COD)of glucose to bovine serum albumin(BSA)on hydrogen production in MEC.The simulated substrate consisted of glucose(carbohydrate)and BSA(protein).Glucose in MEC was more easily utilized than BSA,and had better hydrogen production performance.In the experimental group with glucose to BSA ratio of 1∶0,the hydrogen production reached(28.96±3.45)mL.With the increase of BSA,the hydrogen yield decreased significantly,and the glucose removal rate decreased from(98.65±0.70)%to(92.24±1.84)%.In the experimental groups dominated by BSA(the ratios of glucose to BSA were 1∶5 and 0∶1),hydrogen was more rapidly converted to CH4.In addition,glucose affected the degradation efficiency of BSA,and the degradation rate ranged from(38.49±4.31)%to(44.96±5.13)%.Glucose also affected the conversion pathway of BSA,which could be proved by the decreasing production of ammonia nitrogen(a by‑product of protein degradation).
作者
鄢胜韩
黄恒旭
卓桂华
曾艺芳
江娟
刘常青
甄广印
郑育毅
YAN Sheng‑han;HUANG Heng‑xu;ZHUO Gui‑hua;ZENG Yi‑fang;JIANG Juan;LIU Chang‑qing;ZHEN Guang‑yin;ZHENG Yu‑yi(Fujian Key Laboratory of Pollution Control and Resource Reuse,College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry,Fujian Normal University,Fuzhou 350007,China;Fujian College and University Engineering Research Center for Municipal<Solid>Waste Resourcization and Management,Fuzhou 350007,China;Fujian Academy of Environmental Sciences,Fuzhou 350013,China;Fujian Minhuan Test and Detection Co.Ltd.,Fuzhou 350012,China;Xiamen City Environmental Monitoring Center Station,Xiamen 361022,China;School of Geographical Sciences and School of Carbon Neutrality Future Technology,Fujian Normal University,Fuzhou 350007,China;School of Ecological and Environmental Science,East China Normal University,Shanghai 200241,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2023年第13期95-102,共8页
China Water & Wastewater
基金
福建省科技厅对外合作项目(2021I0010)
福建省科技厅高校产学合作项目(2020N5015)。
关键词
微生物电解池(MEC)
产氢
葡萄糖
蛋白质
microbial electrolytic cell(MEC)
hydrogen production
glucose
protein
